ValueError: could not convert string to float:

This error occurs when a function or method tries to convert a string value into a floating-point number, but the string value is not in a valid format. For example, if the string contains non-numeric characters or has multiple decimal points, it cannot be converted to a float.

To resolve this error, you can try to check the input string and make sure it is valid before trying to convert it to a float. You can also use exception handling to catch the error and handle it appropriately.